Вот моя работа.
import matplotlib.pyplot as plot
import numpy as num
def xr(start, stop, step):
while start < stop:
yield start
start = start + step
wavef = lambda x: num.sin(x)/x
t0 = [wavef(x) for x in xr(5.0,200.0,0.1) if x is not 0]
plot.plot(t0)
plot.show()